The Electromagnetic Spectrum
What is the lowest energy wave on the spectrum
Radio Waves
In the photoelectric effect when light is shined on a metal what is ejected?
electrons
Who created the quantum mechanical model
Schrodinger
Li
1s2, 2s1
B
What is the highest energy wave on the spectrum
Gamma Rays
What are the two ways to excite electrons to observe an elements bright line spectrum
fire or electricity
What does the Aufbau Principle tell us
Lowest energy orbitals are always filled with electrons first.
N
1s2, 2s2, 2p3
Na
[Ne] 3s1
If frequency is increased, what happens to wavelength and energy
Wavelength decreases, energy increases
Draw the shape of an s orbital
sphere
What is the range of the principal quantum number (n)
1-7
1s2, 2s2, 2p6, 3s2, 3p6
[Ne] 3s2, 3p4
If wavelength is increased, what will happen to frequency and energy
frequency decreases, energy decreases
Draw the shape of a P orbital
figure eight
What does the Pauli Exclusion Principle tell us
electrons in the same orbital must have opposite spin
Ge
1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p2
Ti
[Ar] 4s2, 3d2
What are the units of wavelength? What are the units of frequency?
nm and Hz
The Heisenberg uncertainty principle tells us which two properties of an electron cannot be observed at the same time.
Position and velocity
Which quantum number is equal to either +1/2 or -1/2
The spin quantum number
Ag
1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 5s2, 4d9
I
[Kr] 5s2, 4d10, 5p5